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elena-s [515]
3 years ago
9

The hardware store sells batteries individually. Five batteries.cost $4.50, and seven

Mathematics
2 answers:
Liono4ka [1.6K]3 years ago
6 0

Answer:

i think the answer is 7.20

Step-by-step explanation:

geniusboy [140]3 years ago
6 0

Answer:

It's 7.20

Step-by-step explanation:

4.5/how many batteries sold at that amount

4.50/5

=0.9

8 batteries =6.30+0.90

=7.20

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proportional

Step-by-step explanation:

all are multiplied by 3

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What’s the slope to (3,5) and (-3,-5)
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5/3 is the simplified slope.
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Which of the following fractions is in simplest form? 2/10 3/18 5/65 10/37
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The answer is 10/37 because you cannot reduce it anymore
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According to the MIT Airline Data Project, American Airlines controlled 15.5% of the domestic market during a recent year. A ran
Naya [18.7K]

Answer:

0.0143

Step-by-step explanation:

In this question, we are asked to use the binomial distribution to calculate the probability that 10 or fewer passengers from a sample of MIT data project sample were on American airline flights.

We proceed as follows;

The probability that a passenger was an American flight is 15.5%= 15.55/100 = 0.155

Let’s call this probability p

The probability that he/she isn’t on the flight, let’s call this q

q =1 - p= 0.845

Sample size, n = 155

P(X < A) = P(Z < (A - mean)/standard deviation)

Mean = np

= 125 x 0.155

= 19.375

Standard deviation = √npq

= √ (125 x 0.155x 0.845)

= 4.0462

P(10 or fewer passengers were on American Airline flights) = P(X \leq 10)

= P(Z < (10.5 - 19.375)/4.0462)

= P(Z < -2.19)

= 0.0143

4 0
3 years ago
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I WILL MAKE WHOEVER ANSWERS THIS CORRECTLY THE BRAINLIEST :D Rei is barricading a door to stop a horde of zombies. She stacks bo
ivann1987 [24]

Answer:

See below.

Step-by-step explanation:

Well first, we need to find the weight of the table. We know that 8 boxes weighs a total of 240kg (since each box weights 30kg). Thus, we can conclude that the table weighs 70kg by doing 310-240=70.

Now, we can write our function. Let x equal the amount of boxes.

The table is a set weight, so that would be our constant.

Thus, we will have:

f(x)=30x+70

30x represents the weight each box of book adds to the total. One box equals 30kg, 2 boxes equal 60kg, etc.

The 70 represents the unchanging weight of the table.

In terms of W(x), it will be:

W(x)=30x+70

3 0
3 years ago
Read 2 more answers
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